3-羟基丙酸稀溶液的络合萃取

doi:10.12034/j.issn.1009-606X.217158

过程工程学报 ›› 2017, Vol. 17 ›› Issue (6): 1176-1181.DOI: 10.12034/j.issn.1009-606X.217158

3-羟基丙酸稀溶液的络合萃取

朱一帆^1,2，李英波¹，梁向峰³，咸漠³，刘会洲^1*

1. 中国科学院过程工程研究所绿色过程与工程重点实验室，北京 100190；2. 中国科学院大学化学与化工学院，北京 100049； 3. 中国科学院青岛生物能源与过程研究所，山东青岛 266101

收稿日期:2017-03-06 修回日期:2017-04-07 出版日期:2017-12-20 发布日期:2017-12-05
通讯作者: 刘会洲 hzliu@home.ipe.ac.cn

Complexation Extraction of 3-Hydroxypropionic Acid from Its Dilute Solution

Yifan ZHU^1,2, Yingbo LI¹, Xiangfeng LIANG³, Mo XIAN³, Huizhou LIU^1*

1. Key Laboratory of Green Process and Engineering, Institute of Process Engineering, CAS, Beijing 100190, China; 2. School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China; 3. Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong 266101, China

Received:2017-03-06 Revised:2017-04-07 Online:2017-12-20 Published:2017-12-05
Contact: LIU Hui-zhou hzliu@home.ipe.ac.cn

摘要/Abstract

摘要： 以三辛胺为萃取剂，分别用正辛醇、二氯甲烷、乙酸乙酯、4-甲基-2-戊酮、正己烷、环己烷为稀释剂对3-羟基丙酸稀溶液进行络合萃取，分析了稀释剂对萃取的影响，讨论了温度、溶液pH、相比及络合剂体积分数对络合萃取相平衡分配系数的影响，利用傅立叶红外光谱仪测定了负载有机相中萃合物的结构，对三辛胺络合萃取3-羟基丙酸的机理进行了探讨. 结果表明，正辛醇作稀释剂萃取效果最好，平衡分配系数高达4.46. 以NaOH溶液进行反萃，3-羟基丙酸的反萃率为99.6%.

关键词: 络合萃取, 3-羟基丙酸, 三辛胺, 萃取机理, 线性溶剂化能关系

Abstract: Tri-n-octylamine (TOA) was employed as extractant, and n-octanol, dichloromethane, ethyl acetate, methyl-iso-butyl ketone (MIBK), n-hexane and cyclohexane were used as diluents for the extraction of 3-hydroxypropionic acid (3-HP) from its dilute aqueous solution. The effects of diluents on extraction was explained. The influences of temperature, aqueous pH, phase ratio and volume fraction of TOA on the equilibrium distribution coefficient were investigated. The structure of organic phase loaded with 3-HP was studied by IR spectrometer and the mechanism of complexation extraction was explored and proposed. The results showed that n-octanol exhibited best extractability among the tested diluents, with a distribution coefficient of 4.46. Backward extraction was performed with sodium hydroxide aqueous solutions, and a backward extraction rate of 99.6% was obtained.

Key words: complexation, 3-hydroxypropionic acid, tri-n-octylamine, extraction mechanism, LSER

朱一帆李英波梁向峰咸漠刘会洲. 3-羟基丙酸稀溶液的络合萃取[J]. 过程工程学报, 2017, 17(6): 1176-1181.

Yifan ZHU Yingbo LI Xiangfeng LIANG Mo XIAN Huizhou LIU. Complexation Extraction of 3-Hydroxypropionic Acid from Its Dilute Solution[J]. Chin. J. Process Eng., 2017, 17(6): 1176-1181.

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3-羟基丙酸稀溶液的络合萃取

Complexation Extraction of 3-Hydroxypropionic Acid from Its Dilute Solution

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